Sound-magnifier for telegraph instruments.



PATENTED-SEPT. 10, 1907.

F. 0. HANSON. SOUNDMAGNIFIER FOR TELEGRAPH INSTRUMENTS.

APPLICATION FILED FEB-21. 1907.

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wi/tneooeo UNITED STAllfiS PTENT OFFICE.

FREDERICK O. HANSON, OF VICTORIA, KANSAS, ASSIQNOIt OF ONE-HALF TO WM. I SCHRENKLER, OF WALKER, KANSAS.

Specification of Letters Patent.

' Iatented Sept;'10, 1907.

Application filed February 21 1907. Serial No. 368,716.

To all whom it Wag; concern:

Be it known that I, FREDERICK O. HANsoN, a citizen 2 of the United States, residing at Victoria, in the county of Ellis and State of Kansas, have-invented certain new and useful Improvements in SoundMagnifiers for Telegraph Instruments; and I do declare the following to be a full, cleaiyand exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

' This invention relates to improvements in sound magnifiers for telegraph instruments.

The object of the invention is to provide a device of this character adapted to be applied to the relay magnets of a telegraph instrument to amplify the sound produced by the armature levers of the magnets and to provide means for conducting and discharging the sound in any direction.

With the above and other objects in view, the invention consists of certain novel features of construction,

combination and arrangement of parts, as will be hereinaiter described and claimed.

In the accompanying drawings:Figurc 1 is a' front end elevation of the sound magnifying device constructed in accordance with the invontionjl ig. 2 is a vertical; longitudinal, sectional view on the line 2-2- of Fig. 1; Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. I; and Fig. 4 is a detail horizontal sectional view through the supporting yoke or frame of the armature set screw. Referring more particularly to the drawings, 1 denotes the base plate for the relay' magnets, and 2 dcnotes the magnets which are mounted thereon in. any

suitable manner. Secured to the buse 1 by screws or other suitable fastening devices a vertically-disposcd supporting plate 3 having at its lower cnd a right angularly-i'ormed supporting flange 4. Iuthc upper portioii of the plate 3 is formed a circular diaphragm aperture 5, while in the lower portion thereof are formcd two apertures 6 adapted to receive the ends of the aperture magnet 2.

,, Arranged on the flange 4 of the supporting plate are 'upwardly-projecting bearing lugs 7 in which are pivotally-rniflounted'the ends of an armature shaft 8. On

the shaft 8 is mounted a ccntrally-disposcd, upwardlyprojecting armature lever J, said lcvcr having formed thereon anopposite]y-projccting armature plate 10,

of a diaphragm 15 formed of suitable material and so- ,eured in the aperture 5, as shown. On the anvil-plate 12 is formed an ,outwardly-projecting boss or lug 16 adapted to receive the blows of the' armature lever 9 when operated by the magnets 2. Secured to the supporting plate 3 preferably bythe same screws with which the anvil plate is secured is a horizontallydisposed, outwardly-projecting 'yoke or II-shaped frame 17, in which is formed a threaded aperture 18. Through the aperture 18 is adapted to bescrewed an adjusting screw or boltl.) the inner end of; which is adapted to be engaged by the armature lever 9, thereby limiting or regulating the movement of the latter. The set screw or bolt 19 is adapted to be secured in its adjusted position by means of al'ocking nut 20 arranged thereon, as shown.

Secured to the rear side of the supporting plate 3 over the aperture 5 is a plate 21, said plate having formed on its inner side an annular flange 22, adapted to bearagainst the rear side of the supporting plate 3 to secure the diaphragm 5 in place and also to space the plate 21 from said diaphragm, so that the vibrations 01' the latter will not be obstructed. The plate 21. is preferably secured to the supporting plate 3.by means of screws or other fastening devices 23. The plate 21 is provided with a centrally-disposed aperture, with which is connected it rcarwardly-projecting, upwardly-turned, tubular elbow 24, through which the sound vibrations from the diaphragm are conducted to a horn 25. The horn 25 isprovidcd on its rear end with a dowinva-rdly-pn)jccting tubular extension or elbow 26, which is adapted to be engaged with the upwardly-projeciing portion of the elbow 24, whereby said horn is adaptcr'l to be turned in any direction on said elbow 24, thus enabling the sound to be discharged or thrown in any direction. The horn also serves together with the diaphragm to amplii the sound produced by the striking of the armature lever on the anvil plate, said sound being conducted to the diaphragm through the linger l3 and the wire 14, which connects said finger to the diaphragm.

From the. foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to'without departing from the principle or sacrificing any of the advantages of this invention, as dclined by the appended claims.

IIaving'thus described my invention, what I claim as new and desire to secure by Letters-Patent, is:-

1. A sound magnifier i'or telegraph instruments comprising an apertured supporting plate, on armature lever pivotally-mounted thereon; an anvil plate to receive the blows of said lever, a diaphragm in one of the apertures of said supporting plate, sound conducting connections between suid anvil plate and said diaphragm, and means whereby the sound vibrations of the diaphragm are conducted therefrom and dischargedin any direction, substantially as described.

2. A sound magnifier for telegraph instruments comprising a supporting plate having formed in its upper portion a centrally-disposed diaphragm opening and in its lower portion openings to receive the magnet of a relay instrument, an armature lever pivotally-mounted on said supporting plate. an armature plate arranged on said lever in position to be attracted by said relay magnets, means to regulate the movement of said armature lever, an anvil plate adapted to receive the blows from said armature-lever, a diaphragm arranged in said diaphragm opening of the supporting plate, sound conducting connections between said anvil plate and diaphragm, a sound conducting tube arranged on the opposite side of said supporting plate, and a sound amplifying and conduct:

ing horn arranged on said tube to swing in any direction, substantially as described.

3. A sound magnifier for telegraph instruments comprising a supporting plate adapted to be secured to-the base plate of a relay instrument, said supporting plate having formed therein a diaphragm opening and openings to receive the magnets of said relay, bearing lugs arranged on said supporting plate, an armatur shaft pivotally-mounted in said lugs, an armature lever arranged on said shaft, an armature plate arranged on said lever in position to be attracted by the magnets'of said relay, a yoke secured to suid supporting plate around said armature lever, a. regulating screw arranged in said yoke to limit the movement of Said lever, an anvil plate secured to said supporting plate, a boss or projection on said anvil plate, an upwardly-projecting V-shaped finger on said anvil plate, a diaplu-agmarranged in the opening of said supporting plate, a conducting wire to connect said finger with said diaphragm, a flanged plate arranged on the rear side of said supporting plate to hold said diaphragm in position, a tubular sound conducting elbow arranged on said suppoi-ti11gplate, and a sound conductingand amplifying horn having on its inner ends a tubular elbow adapted 'to be pivotally engaged with the sound conducting elbow of said plate, substantially as described In testimony whereof I have hereunto set my hand in prese'nce'of two subscribing witnesses.

FREDERICK. O. HANsON. 

